ASTM A304 yog tus qauv txheem rau cov pa roj carbon thiab cov hlau nplaum Alloy Steel uas yuav tsum tau ** Hardness Kuaj ** Tom qab Kev Kho Mob Cua Sov. Nws npog cov kab uas siv nyob rau hauv cov ntawv thov uas ** siab zog ** lossis ** Hnav tsis kam ** yog qhov tseem ceeb, xws li kev kho tsheb lossis tshuab sib txuas. Tus qauv qhia cov tseev kom muaj rau tshuaj muaj tshuaj lom neeg, cov txheej txheem kho cua sov, thiab cov khoom siv mechanies.
